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    Viper

    The stock 640 hp SRT Viper is just not good enough for the folks at Hennessey Performance. So they added long-tube headers, a 3-inch exhaust, K&N filter and high-flow cylinder heads and saw an increase of 85 horsepower to 725 hp and 695 lb-ft of torque! I’m sure they won’t stop there but you can check the out video after the jump!

    via [Mopar Blog]

     
     
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